James denny daitgherty



Patented Sept. l3, I898.

J. D. DAUGHEBTY.

T Y P E W R l T E R.

(Application filed Aug. 26, 1896.)

(No Model.)

No. 6l0,80|. Patented Sept. I3, "898. J.D. DAUGHERTY. TYPE WRITER.

- (Application filed Aug. 26, 1896;) (No Model.) 2 Sheets-Sheet 2.

E ERS coi, wo'roumou WASHINGTON, a, c

irnn hrnrns JAMES DENNY DAUGHERTY, OF KITTANNING, PENNSYLVANIA, ASSIGNOR TO THE DAUGHERTY TYPEWRITER COMPANY, OF SAME PLACE.

TYPE-WRITER.

SPECIFICATION forming part of Letters Patent No. 610,801, dated September 13, 1898. Application filed August 26, 1896. Serial No. 603,966. (No model.)

To all whom it may concern:

Be it known that I, J AMES DENNY DAUGH- ERTY, of Kittanning, in the county of Arm strong and State of Pennsylvania, have invented certain new and useful Improvements in Type-WVriters; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to improvements in type-Writers, and pertains to an improved marginal stop for the carriage and an automatically-operated buffer to prevent the piling of letters at the end of the line of writing.

One object of my invention is to provide an improved form of adjustable marginal stop for the carriage, whereby a partial oscillation of the stop upon the carriage-rod in one direction locks the stop against movement thereon, while a partial oscillation of the stop in the opposite direction will release it and permit an endwise movement thereof upon the rod.

A further object of my invention is to so construct the marginal stop that by a partial oscillation thereof it will permit the carriage to move any desired number of spaces to allow the operator to fill in or complete a word at the end of the predetermined line, the stop being also constructed to automatically assume its locked position when the carriage has been drawn back for the writing of another line.

Another object of my invention is to provide an automatically-operated buffer to intercept the type bars as they move to the printing-point when the end of the predetermined line has been reachedto prevent piling of the letters.

Another object is to so construct the mar ginal stop and the buffer mechanism that it will operate at any adjustment of the stop for a line of a predetermined length, producing what may be aptly termed a universal stop and buffer.

Referring now to the drawings, Figure 1 1s a perspective view of the inner or rear end of the type-writer, showing the carriage-supporting rod and a portion of the carriage- -fra1ne with my invention applied thereto.

teeth 10 thereof.

Fig. 2 is a central vertical section of the same, the buffer being shown thrown out in dotted lines intercepting a type-bar, the latter also being shown in dotted lines. Fig. 3 is an en= larged perspective view of one end of the car riage-supporting rod and my improved marginal stop. Fig. 4 is a detached perspective view of the rock-shaft carrying the buffer-op crating bail and one end of the carriage-sup porting rod with the marginal stop thereon. Fig. 5 is a detached perspective view of a shaft upon which the buffer is arranged. Fig. 6 is an enlarged rear perspective view of one end of the carriage-supporting rod, the stop, and the adjacent portion of the carriage-frame with its yoke.

A indicates the rear end of the type-writer frame, 2 the carriage-supporting rod, and 3 the carriage or platen frame.

My invention is here shown and especially adapted for the Daugherty type; writing machine, though it is equally adapted for other forms of no achines with slight variation,

as will be readily understood from the description and drawings.

My improved marginal stop consists in providing the carriage-supporting rod 2 with a longitudinal groove 9 at one or both ends, one edge of the longitudinal groove being provided with teeth 10, preferably corresponding with the teeth of the rack-bar of the carriage-feed mechanism. The marginal stop 11 is made in band form, as shown, to surround the rod 2 and provided with teeth 12, projecting within the band. These teeth are adapted to slide in the groove 9 of the bar 2 and to engage the I preferably show a plurality of teeth 12 within the band to make more positive and sure the locking of the stop, though a single projection would serve the purpose, as will readily be conceived. In placing the stop in position it is necessary to have the teeth 12 register with the groove 9 of the supporting-bar 2, when the stop can be moved freely back and forth upon the rod to any desired adjustment. A slight downward oscillation of the stop will cause the teeth 12 to engage the teeth 10 of the bar 2, thus holding the stop against endwise movement, as will be readily understood.

Thus far I have described an improvement in a marginal stop capable of arresting the movement of the carriage without providing for any additional movement of the carriage when it has reached the end of the line, and it will thus be seen that the stop is capable of use in connection with type-writers irrespective of the other constructions to be hereinafter described. It will be noticed that the stop is arranged upon the carriage-supportin g rod 2; but it may be arranged upon any adjacent rod extending parallel the carriage without departing in the least from my invention. It is desirable to provide a means whereby when the carriage has reached the predetermined end of the line it may be permitted to move one, two, three, or more spaces for the purpose of completing a word, as is well under stood by those skilled in the art. I To accomplish this, I provide the stop 11 with a projection 13, extending inward toward the center of the machine, which projection is adapted to engage a projection or stop 25 of the carriage. This stop 25 consists of a yoke extending partially around the rear and front sides of the carriage-supporting rod, and the stop 11 and the arm 18 thereof engage the rear portion or arm of said yoke. The stop 11 and the arm 13 constitute two shoulders, against which the carriage stop or yoke 25 abuts. When the carriage has been stopped by the engagement of the projection 13 and the stop 25, a slight oscillation of the stop upon the rod 2 will carry the projection 13 out of line with the stop 25, thus permitting the carriage to move an additional distance equal to the length of the projection 13, thus allowing the operator to complete an unfinished word. The movement of the carriage in the opposite direction to begin another line causes the projection'13 and stop 25 to disengage, and the stop, being weighted at its handle end 26, will automatically drop downward to its original position. The teeth 10 on the rod 2 are preferably made long enough to permit sufficient oscillation of the stop to carry the projection 13 out of the path of the stop 25 on the carriage, so that the carriage will be permitted to move the additional space without disengaging the teeth 12 and 10.

It will thus be seen that I provide a very simple arrangement for allowing the writing of several letters after the predetermined end of the line has been reached and that the device is universal in that it produces the same result no matter what may be its adjustment upon the rod 2 to suit the desired length of line being written.

It is also deemed desirable to prevent the piling of letters when the end of the line is reached, and this I accomplish in a simple manner through the intervention of the same marginal stop and an intermediate mechanism. This is accomplished by providing an oscillating bail or arm 27, supported upon the rod 5, the latter supported in turn by the frame of the type-writer, as clearly shown in Fig. 1, and this bail or arm 27 has a rear wardly-extending crank or projection 28.

Supported in the carriage-frame 8 is a rockshaft 6, carrying a buffer-operating bail or arm 7. This shaft 6 is also provided with a projecting arm 8, made fast thereon. The stop 11 at the finishing end of the line, or at the left side of the machine, is provided with a rearwardly-extending projection'14, having a cam or inclined surface 15, with which the arm 8 of the shaft (5 engages as the carriage moves to that end of the machine. By means of this construction it will be seen that when the carriage reaches the end of the line regulated by the adjustment of the stop 11 the arm 8 engages the cam-surface 15 and is forced outward, causing the rock-shaft 6 to partially turn, which moves the upper edge of the bail 7 inward against the arm or projection 28 of the bail or buffer 27, which in turn moves the buffer outward, as shown in dotted lines in Fig. 2. The outward movement of the buffer intercepts the type-bars as they move to the printing-point and prevents the piling of the letters. This arrangement is also universal in that no matter what the adjustment of the marginal stop is to regulate the length of the line the buffer will operate to intercept the type-bars and to prevent a piling of the letters at the end of the preadjusted line. The opposite or right-hand side of the bar 2 is provided with a marginal stop similar to the one at the left-hand side of the machine, with the exception of the projection 14. This will enable an adjustment of the line in both directions upon the sheet of paper. The purpose of the groove 9 in the bar 2 is to provide a way for the teeth 12 of the stop, so that any cut-away of the bar 2 to permit the passage thereover of the teeth 12 will accomplish the purpose of the groove 9, though it may differ in specific form from said groove, and other specific constructions will readily occur to skilled mechanics for producing an engagement and disengagement of the teeth of the stop and supporting-bar without departing from my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A marginal stop device consisting of a 'carriage-supportin g rod having a plurality of teeth, a freelyoscillating stop supported thereby, said stop having an inwardly-extending tooth adapted to engage the teeth upon said rod, the stop having a counterweight holding its tooth normally in contact with the bar-teeth when released, substantially as shown and described.

2. The combination with a type-writer carriage, of a rod extending longitudinal the carriage and provided with a plurality of teeth,

a marginal stop device freely rotatable and longitudinally movable upon said rod, the stop device having a tooth adapted to interlock with the rod-teeth and also provided with a plurality of rigid shoulders, one projecting in advance of the other, the foremost shoulder adapted to arrest the carriage when the stop is in its normal position, and the succeeding shoulder adapted to arrest the carriage when the stop is oscillated, substantially as described.

3. The combination in a type-writer of the type-bars, a buffer movable in the path of the bars, a marginal stop, and an operative connection adapted to engage the stop and through the movement of the carriage move the buffer in the path of the type-bars, substantially as described.

4:. The combination in a type-Writer of the type-bars, a buffer movable in the path of the bars, a marginal stop, a movable member carried by the carriage and engaging the stop and the buffer, the movement of the carriage actuating the movable member and through it the buffer, substantially as described.

5. The combination of a movable buffer, a rock-shaft carried by the carriage, having at one side a member engaging and operating the buffer, and at the opposite side an arm, and a stop with which the arm engages through the movement of the carriage and actuates the rock-shaft, substantially as described.

6. The combination of an oscillating buffer, the carriage carrying the rock-shaft, the rockshaft having an elongated arm adapted to engage and operate the buffer, astop, said rockshaft provided with an arm engaging the stop and through the movement of the carriage rocking said shaft, substantially as de scribed.

7. The combination of a movable bufier, an adjustable stop, a carriage, type-bars, and a movable member carried by the carriage having a portion engaging the stop and moved thereby through the movement of the carriage, and also adapted when moved to actuate the buffer, whereby the buffer is operated at any adjustment of the stop to the desired length of line, substantially as described.

8. The combination of an oscillating buffer having a projecting arm, the carriage carrying an oscillating shaft provided with an elongated member constructed to engage the buffer-arm, a stop having a cam-surface, said shaft provided with a projection adapted to engage the cam-surface of the stop, the parts operating substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES DENNY DAUGHERTY.

WVitnesses:

WM. BROWN, II. L. GOLDEN. 

